Observations of binary stars have helped astronomers to determine which important scientific parameter?

Question

Quizplus · Accepted Answer

Binary stars orbit around their common center of mass, and the period and separation of their orbits can be measured. By applying Kepler's laws of motion and using the observed period and separation, the masses of the stars can be calculated. This is an important parameter for understanding the properties and evolution of stars.

Observations of Binary Stars Have Helped Astronomers to Determine Which